#199DDC
Closest named color: Chefchaouen Blue (#4895EF). oklch(66% 0.139 237.1), rgb(25, 157, 220).
Aa
Black text reads best on this color (6.89:1).
About this color
#199DDC is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.139 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.046 away. Black text reads best on it, at 6.89:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.89:1 |
| White text | 3.04:1 |
Values
| HEX | #199DDC |
| RGB | rgb(25, 157, 220) |
| HSL | hsl(199, 80%, 48%) |
| OKLCH | oklch(66% 0.139 237.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #199DDC | 3.04:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #199DDC | 6.89:1 | AA | Lc 47.3 | Large or bold text, headings |
| #199DDC text on white | 3.04:1 | AA large text | Lc 56.7 | Large or bold text, headings |
| #199DDC text on black | 6.89:1 | AA | Lc -45.1 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C3DEEF
oklch(88.6% 0.037 235.5)
-
Step 300
300
#97C8E7
oklch(80.9% 0.068 236.5)
-
Step 400
400
#57AADC
oklch(70.6% 0.109 237.5)
-
Step 500
500 (this color)
#199DDC
oklch(66% 0.139 237.1)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
Step 700
700
#006896
oklch(49.1% 0.108 237.6)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#022A3F
oklch(27.1% 0.057 237.5)
#199DDC with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #7E9DDF | 0.077 |
| Deuteranopia (no green cones) | #658CDB | 0.063 |
| Tritanopia (no blue cones) | #00ADB3 | 0.088 |
| Achromatopsia (no color) | #949494 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #199DDC
#199DDC
oklch(66% 0.139 237.1)
- #D1792E
#D1792E
oklch(66% 0.139 56.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #199DDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.048
- Cornflower Blue #6495ED ΔE 0.061
- Water Blue #0E87CC ΔE 0.063
- Dodger Blue #1E90FF ΔE 0.069
- Faded Blue #658CBB ΔE 0.070
- Blue NCS #118AB2 ΔE 0.076
- Turquoise Blue #06B1C4 ΔE 0.076
Use #199DDC in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.